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Environmental fate & pathways

Henry's Law constant

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Description of key information

Styrene oxide is moderately volatile from aqueous solution.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
at the temperature of:
25 °C

Additional information

In the SRC PhysProp database, the experimentally determined Henry's Law constant of styrene oxide is reported to be 1.58 10E-5 atm m³/mole (1.6 Pa m³/mole). Based on the result, styrene oxide can be regarded as moderately volatile from aqueous solution. This result is supported by the calculation using EPIWIN v3.20, HENRYWIN v3.10. The calculated Henry’s constant is 1.83 Pa m³/mole.